Source: Cabraal et al (1996), p18

Source: Cabraal et al (1996), p18

A similar World Bank study also analysed the competitiveness of solar, but this time by various socio-economic groups (see Table 3.7) and concluded that 'PV systems are generally financially competitive in providing the services demanded in each socioeconomic group'.36

Table 3.7 Comparison by socio-economic group between expenditure on conventional alternatives to electricity grid and monthly amortized cost of solar

Socio-economic group


Existing monthly expenditure ($)

Solar systems

Solar monthly amortization ($)


Kerosene lamp Candles

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